Solid-state RF Switches:

Operated by solid-state devices, such as PIN diodes, GaAs FETs, high-speed silicon diodes or hybrid circuits, etc., used to switch high-frequency signals. From single-pole single-throw to single-pole sixteen-throw that can convert a single input into 16 different output states, or more throw configurations. The transfer switch is a double-pole double-throw switch. Such switches have four ports and two possible switch states, enabling the load to be switched between two sources. The main electrical parameters affecting RF switches include isolation, insertion loss, switching time and power handling capacity.

They have excellent performance such as small size, high sensitivity, fast response speed, good frequency response and wide operating frequency band. Coaxial detectors are suitable for power detection in various military or civilian electronic devices such as communications, radars, electronic countermeasures, navigation, microwave measurements, amplitude stabilization of signal sources, and sweep measurements of transmission and reflection.

A biaser is mainly used to inject DC current or voltage into an RF circuit without affecting the RF signal passing through the main transmission path. The DC port of the biaser consists of a feed inductor, which is used to add a DC bias and prevent the AC signal at the RF port from leaking to the power supply system. Under ideal conditions, the DC end will not have any impact on the RF end signal; the RF port consists of a blocking capacitor, which is used to input the RF signal and can also block the DC voltage at the bias port. Through this design, a single RF cable is used to simultaneously transmit DC and RF signals to a remote end.

A DC blocker is a coaxial adapter that can block DC signals and allow RF signals to pass through. It uses capacitors to block direct current and is used to protect sensitive RF components from the influence of direct current.

A microwave limiter is a self-controlled attenuator and a power modulation device. When the input signal power is small, it passes through without attenuation. When the input power increases beyond a certain value, the attenuation increases rapidly. This power value is called the threshold level. After the input power exceeds the threshold level, the output power no longer increases. It is often used in microwave sweep signal sources or phase detection systems to keep the output signal amplitude stable.

The microwave equalizer series products developed and produced by our company are manufactured using advanced microelectronic assembly processes. Our company has developed this series of products to address the problem that the large difference in gain (insertion loss) between the high and low ends within the frequency band in the design and debugging of broadband microwave systems reduces the dynamic range of the system.

Digital Attenuator:

A circuit that realizes signal attenuation by adjusting the signal level. Its working principle can be simply divided into two parts: a digital controller and an attenuator.

Voltage-controlled Attenuator:

A two-port network that adjusts the signal amplitude between the input and output ports by controlling the DC bias. It is widely used in RF and microwave systems. Its applications include gain control after LNA (Low Noise Amplifier) or PA (Power Amplifier), amplitude modulators, amplitude stabilization circuits in oscillators, automatic gain control systems, etc.

RF phase shifters are important devices in RF and microwave systems. They are used to control the relative phase of each element in phased array antennas of radars, directionally controllable communication links, and cancellation loops of high-linearity amplifiers.

Low Noise Amplifier (LNA) is an amplifier with a very low noise figure. It is used in circuits to amplify weak signals and minimize the noise introduced by the amplifier as much as possible.

The main functions of the low noise amplifier are to improve signal quality, extend communication distance, and improve system sensitivity.

Power Amplifiers (PA) are electronic amplifiers specially designed to amplify the power of RF or microwave signals so that the signals can be effectively radiated through antennas.

Driver amplifiers usually have high gain and high output power. A driver amplifier is a circuit used to enhance the output signal. In practical applications, driver amplifiers are mainly used in situations where the signal amplitude and capability need to be enhanced.